TY - JOUR
T1 - Pressure generation to 65 GPa in a Kawai-type multi-anvil apparatus with tungsten carbide anvils
AU - Ishii, Takayuki
AU - Yamazaki, Daisuke
AU - Tsujino, Noriyoshi
AU - Xu, Fang
AU - Liu, Zhaodong
AU - Kawazoe, Takaaki
AU - Yamamoto, Takafumi
AU - Druzhbin, Dmitry
AU - Wang, Lin
AU - Higo, Yuji
AU - Tange, Yoshinori
AU - Yoshino, Takashi
AU - Katsura, Tomoo
N1 - Funding Information:
This study is also supported by the research project approved by DFG (KA-3434/7, KA-3434/8 and KA-3434/9) and BMBF (05K16WC2) to T. Katsura and by the Overseas Research Fellowship from the Scientific Research of the Japan Society for the Promotion of Science (JSPS) for Young Scientists to T. I.
PY - 2017/10/2
Y1 - 2017/10/2
N2 - We have expanded the pressure ranges at room and high temperatures generated in a Kawai-type multi-anvil apparatus (KMA) using tungsten carbide (WC) anvils with a high hardness of Hv = 2700 and a Young’s modulus of 660 GPa. At room temperature, a pressure of 64 GPa, which is the highest pressure generated with KMA using WC anvils in the world, was achieved using 1°-tapered anvils with a 1.5-mm truncation. Pressures of 48–50 GPa were generated at high temperatures of 1600–2000 K, which are also higher than previously achieved. Tapered anvils make wide anvil gaps enabling efficient X-ray diffraction. The present pressure generation technique can be used for studying the upper part of the Earth’s lower mantle down to 1200 km depth without sintered diamond anvils.
AB - We have expanded the pressure ranges at room and high temperatures generated in a Kawai-type multi-anvil apparatus (KMA) using tungsten carbide (WC) anvils with a high hardness of Hv = 2700 and a Young’s modulus of 660 GPa. At room temperature, a pressure of 64 GPa, which is the highest pressure generated with KMA using WC anvils in the world, was achieved using 1°-tapered anvils with a 1.5-mm truncation. Pressures of 48–50 GPa were generated at high temperatures of 1600–2000 K, which are also higher than previously achieved. Tapered anvils make wide anvil gaps enabling efficient X-ray diffraction. The present pressure generation technique can be used for studying the upper part of the Earth’s lower mantle down to 1200 km depth without sintered diamond anvils.
KW - Kawai-type multi-anvil apparatus
KW - lower mantle
KW - sintered diamond anvil
KW - synchrotron
KW - tungsten carbide anvil
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U2 - 10.1080/08957959.2017.1375491
DO - 10.1080/08957959.2017.1375491
M3 - Article
AN - SCOPUS:85029467900
VL - 37
SP - 507
EP - 515
JO - High Pressure Research
JF - High Pressure Research
SN - 0895-7959
IS - 4
ER -